pro.fessional.mirana.cast

Class TypedCastUtil

java.lang.Object

pro.fessional.mirana.cast.TypedCastUtil

public class TypedCastUtil
extends Object

Type casting with type checking first. If Class is specified and the type is wrong, null is returned, otherwise, a ClassCastException is thrown.

Since:

2019-07-03

Author:

trydofor

Constructor Summary

Constructors

Constructor and Description
TypedCastUtil()

Method Summary

Modifier and Type	Method and Description
static <T> @NotNull Collection<T>	castCollection(Collection<?> obj) force to cast object in collection.
static <T> @NotNull Collection<T>	castCollection(Collection<?> obj, Class<T> claz) type checking first, then cast type.
static <T> @NotNull List<T>	castList(Collection<?> obj) force to cast object in collection.
static <T> @NotNull List<T>	castList(Collection<?> obj, Class<T> claz) type checking first, then cast type.
static <T> T	castObject(Object obj) force to cast object
static <T> T	castObject(Object obj, Class<T> claz) type checking first, then cast type.
static <T> @NotNull Set<T>	castSet(Collection<?> obj) force to cast object in collection.
static <T> @NotNull Set<T>	castSet(Collection<?> obj, Class<T> claz) type checking first, then cast type.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TypedCastUtil

public TypedCastUtil()

Method Detail

castObject

@Contract(value="!null->!null")
public static <T> T castObject(Object obj)

force to cast object

Throws:

ClassCastException - if type wrong.

castObject

@Nullable
public static <T> T castObject(Object obj,
                                         Class<T> claz)

type checking first, then cast type. return null if type wrong.

castCollection

@NotNull
public static <T> @NotNull Collection<T> castCollection(Collection<?> obj)

force to cast object in collection.

Throws:

ClassCastException - if type wrong.

castCollection

@NotNull
public static <T> @NotNull Collection<T> castCollection(Collection<?> obj,
                                                                 Class<T> claz)

type checking first, then cast type. return empty if type wrong.

castList

@NotNull
public static <T> @NotNull List<T> castList(Collection<?> obj)

force to cast object in collection.

Throws:

ClassCastException - if type wrong.

castList

@NotNull
public static <T> @NotNull List<T> castList(Collection<?> obj,
                                                     Class<T> claz)

type checking first, then cast type. return empty if type wrong.

castSet

@NotNull
public static <T> @NotNull Set<T> castSet(Collection<?> obj)

force to cast object in collection.

Throws:

ClassCastException - if type wrong.

castSet

@NotNull
public static <T> @NotNull Set<T> castSet(Collection<?> obj,
                                                   Class<T> claz)

type checking first, then cast type. return empty if type wrong.